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...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7410563 | Method and apparatus for preventing corrosion of contact A method for preventing corrosion of a contact, includes comparing a potential of a signal line connected to the contact with a predetermined potential corresponding to the corrosion of the contact; flowing a corrosion-prevention current into the contact when a resu... | 08/12/2008 |
| 7387713 | Resistored anode construction A sacrificial anode assembly operative to inhibit corrosion in the metal tank portion of a water heater includes a cylindrical metal anode member having an end retained within a tubular, electrically non-conductive plastic insulating sleeve which, in turn, is captiv... | 06/17/2008 |
| 7318889 | Apparatus, system and method for extending the life of sacrificial anodes on cathodic protection systems An apparatus, system, method and computer program product directed to controlling corrosion of a conductive structure in contact with a corrosive environment and electrically connected to one or more anodes, wherein the anodes are less noble than the conductive stru... | 01/15/2008 |
| 7264697 | Marine anode with current tester A sacrificial marine anode with a water proof encased current tester to alert an operator of proper connectivity, current status of the cathodic protection system for an associated marine structure, and status of current tester power supply is disclosed. ... | 09/04/2007 |
| 7260457 | Secondary power supply for telematics terminal The present invention provides a secondary power supply for the telematics terminal. A secondary power supply for a telematics terminal including. a power control unit for controlling a power supply based on a power control signal of the telematics terminal and/or a... | 08/21/2007 |
| 7198706 | Method for inhibiting corrosion of metal The present invention generally provides a method for prevention of corrosion in a metal object by inducing a surface current over the entire surface of the metal object. The surface current can be induced by direct or indirect application of electrical waveforms ha... | 04/03/2007 |
| 7192513 | Cathodic protection junction box current equalizer A cathodic protection junction box current equalizer has a plurality of output terminals each being connectable through a variable resistors to an anode, the resistors being controlled such that the corresponding anode outputs a desired current. ... | 03/20/2007 |
| 7189319 | Axial current meter for in-situ continuous monitoring of corrosion and cathodic protection current First and second axial current meters (ACM) are mechanically connected to a well casing just above and below a corrosive zone and a master axial current meter (MACM) is connected to the casing at the earth's surface, the MACM periodically obtaining measurements of a... | 03/13/2007 |
| 7186321 | Cathodic protection system for metallic structures An active cathodic protection system, the apparatus comprising a rectifier element with at least one electrical connection to a source of electrical current, the rectifier element associated with a direct current positive (+) output terminal for electrical connectio... | 03/06/2007 |
| 7111668 | Cooling arrangement for an offshore wind energy installation A cooling arrangement for an offshore wind energy installation, having a heat-absorbing device for absorbing heat generated by the electronic devices and/or the mechanical devices of the offshore energy installation, which is to be removed, and a coupled heat-dissip... | 09/26/2006 |
| 7081187 | Internal cathodic protection system A cathodic protection system for internal surfaces of a pipeline is provided which includes a flexible anode assembly having a first and a second end and having at least one flexible anode wire having a first end and a second end. First and second removable pressure... | 07/25/2006 |
| 7029569 | Semiconductive corrosion and fouling control apparatus, system, and method An apparatus, system, method and computer program product directed to controlling corrosion of a conductive structure in contact with a corrosive environment and coated with a semiconductive coating, where the corrosion is controlled by a controllable filter and a c... | 04/18/2006 |
| 6998031 | Electrode An electrode comprises an elongate hollow tube made of porous titanium suboxide the inside wall of which is contacted at spaced apart locations by an electrical conductor so that the current is substantially uniformly distributed along the length of the electrode. | 02/14/2006 |
| 6841059 | Hull potential monitor device having a plurality of annunciators A monitor for use in conjunction with a galvanic protection system for a marine vessel provides automatic and continuous monitoring of a voltage at a reference electrode of the galvanic protection system and displays the results continuously by energizing one or mor... | 01/11/2005 |
| 6835291 | Anode monitoring and subsea pipeline power transmission An anode monitoring system for monitoring the integrity of anodes 2 provided on a metallic structure such as a pipeline system 1. A signal circuit Sn including the pipeline 1 and one of the anodes 2 is set up and appropriate si... | 12/28/2004 |
| 6811681 | Semiconductive corrosion and fouling control apparatus, system, and method An apparatus, system, method and computer program product directed to controlling corrosion of a conductive structure in contact with a corrosive environment and coated with a semiconductive coating, where the corrosion is controlled by a controllable filter and a c... | 11/02/2004 |
| 6423208 | Method and apparatus for lead contamination control Control of lead contamination in residential water supplies is accomplished by cathodic protection of lead-containing piping and lead-containing fixtures. Specifically, a partially insulated wire is inserted into lead-containing service lateral piping. Ap... | 07/23/2002 |
| 6361664 | Method of reducing corrosion with electrical charge A vehicle system component is provided with an electrical charge to resist corrosion. Preferably, the electrical charge is generated by movement of components adjacent to the suspension component. Friction surfaces may be placed in contact with each other... | 03/26/2002 |
| 6331243 | Process and apparatus for preventing oxidation of metal An apparatus for prevention of corrosion in metal objects uses a capacitively coupled fastener or pad attached to a metal body being protected from corrosion. The metal body and the negative terminal of a source of DC voltage (battery) are grounded. The p... | 12/18/2001 |
| 6261439 | Cathodic protection system for mitigating stray electric current effects A cathodic protection system utilizes dynamic control of an output from a power supply to vary an impressed current applied to a structure to be protected proportional to a measurement of stray electrical current. The current is also supplied to an anode ... | 07/17/2001 |
| 6183625 | Marine galvanic protection monitor A galvanic monitor system uses two annunciators, such like light emitting diodes, to alert a boat operator of the current status of the boat's galvanic protection system. A reference electrode is used to monitor the voltage potential at a location in the ... | 02/06/2001 |
| 6103097 | Method and apparatus for lead contamination control Control of lead contamination in residential water supplies is accomplished by cathodic protection of lead-containing piping and lead-containing fixtures. Specifically, a partially insulated wire is inserted into lead-containing service lateral piping. Ap... | 08/15/2000 |
| 6019877 | Protecting medical electrodes from corrosion A medical electrode assembly includes an electrically conductive electrode, an electrically conductive sacrificial element, and a layer of electrically conductive gel. The electrode has an electrical terminal to connect with external electrical circuitry.... | 02/01/2000 |
| 5954938 | Simplified cathodic corrosion protection method and apparatus for metal structure Mounting an anode on a coated surface of a metal structure exposed to the atmosphere; connecting a cathode to a main body of the metal structure; connecting the anode and the cathode to a solar battery; whereby when a defective part is generated on the co... | 09/21/1999 |
| 5627414 | Automatic marine cathodic protection system using galvanic anodes An automatic system uses sacrificial galvanic anodes to to provide a controlled and optimum amount of cathodic protection against galvanic corrosion on submerged metal parts. Intermittently pulsed control circuitry enables an electro-mechanical servo syst... | 05/06/1997 |
| 5352342 | Method and apparatus for preventing corrosion of metal structures A system for preventing corrosion of a surface of a metal structure in contact with a corrosive environment comprising: (a) a conductive zinc silicate coating in conductive contact with at least part of the surface, wherein the conductive zinc silicate coating... | 10/04/1994 |
| 5139634 | Method of use of dual bed cathodic protection system with automatic controls This invention relates to a dual bed cathodic protection system with automatic controls and method of use utilizing an impressed cathodic protection anode assembly powered through a solar power supply in conjunction with a sacrificial cathodic protection ... | 08/18/1992 |
| 5102514 | Cathodic protection system using carbosil anodes An automotive cathodic protection apparatus applies direct current to an integrated circuit timer and power controller, which generates times output pulses. An output charge storing capacitor connects the power source and timer to a vehicle body.... | 04/07/1992 |
| 4975560 | Apparatus for powering the corrosion protection system in an electric water heater A common source of DC potential is utilized to simultaneously provide power to the protective anode in an electrically heated hot water heater and to the circuit used to bias the heating element jacket to reduce the current load the jacket would otherwise... | 12/04/1990 |
| 4972066 | Method and apparatus for reducing the current drain on the sacrificial anode in a water heater The adverse effects of the exposed metal jacket on a heating element in an electric water heater on the life and performance of a protective anode are eliminated or substantially reduced with the system that imposes a low voltage differential between the ... | 11/20/1990 |
| 4950372 | Cathodic protection system using carbosil anodes An automotive cathodic protection apparatus applies direct current to an integrated circuit timer and power controller, which generates timed output pulses. An output charge storing capacitor connects the power source and timer to a vehicle body.... | 08/21/1990 |
| 4828665 | Cathodic protection system using carbosil anodes Cathodic protection of vehicle bodies provides a capacitive charge on an anode which is attached to a painted surface. Moisture in contact with the painted surface spreads the charge. A minute current is established at holidays, protecting damp metal surf... | 05/09/1989 |
| 4798658 | Device for the cathodic corrosion-protection of metal parts A device for the cathodic protection of metal parts in which electrodes and voltage source are used to charge positively an electrolyte in relation to the metal surface which is to be protected. The electrodes (1) are so designed that they extend linearly... | 01/17/1989 |
| 4752368 | System for protecting metal structures against corrosion A corrosion protection system comprises a circuit which includes rectifiers connecting the structure being protected to an alternating current source for producing negative current flow from the source to the device. An impedance is connected in circuit w... | 06/21/1988 |
| 4694211 | System for supplying fuel including protection against electrolytic corrosion An system for the supply of fuel which acts as an electrolyte, including a metallic component part as a sacrificial anode for protection of metallic current leads against electrolytic corrosion. The component part is connected to the positive side of the ... | 09/15/1987 |
| 4626875 | Apparatus for liquid-jet recording wherein a potential is applied to the liquid An apparatus for liquid-jet recording having heat-generating means and means for jetting a liquid utilizing an energy generated by the heat-generating means comprises an electrode provided in contact with the liquid in impart a potential to the liquid low... | 12/02/1986 |
| 4592818 | Cathodic protection system In an impressed current cathodic protection system for a boat and/or its propulsion system the boat battery is connected to a switching type power converter which supplies the anode higher current at lower voltage than taken from the battery. The voltage ... | 06/03/1986 |
| 4588022 | Anodic protection system and method An anodic protection system particularly useful in heat exchangers for cooling sulphuric acid, in which the cathode projects through both ends of the heat exchanger and a negative potential is applied to both ends of the cathode. The potentials are contro... | 05/13/1986 |
| 4561949 | Apparatus and method for preventing activity loss from electrodes during shutdown An improved method for shutting down an electrolytic cell for the electrolysis of aqueous solutions containing ionizable compounds is provided. The electrolytic cell has a first electrode, a second electrode of opposite polarity, a first conductor electri... | 12/31/1985 |
| 4528460 | Cathodic protection controller A control system (17) for cathodically protecting an outboard drive unit (11) from corrosion includes an anode (12) and a reference electrode (13) mounted on the drive unit (11). Current supplied to the anode is controlled by a transistor (20), which in t... | 07/09/1985 |
